Posted By shaun mckeever
Probably not but the information is a bit sketchy.

Is the false ceiling you are referring to in the corridor or the rooms?
Are there breaches in the walls between the rooms and the corridor for services such as pipes or cable runs?
Is it a single storey building?
Do the walls carry up above the false ceiling to the underside of the floor above?

Posted By shaun mckeever
If a fire were to start in one of the rooms and there are breaches in the walls as you described then the corridor will be considered as unprotected because fire and products of combustion will be able to spread to the corridor. This may not be such a problem if you are looking at it from a life safety point of view. There are other factors to consider. As the building is single storey are there exit routes from each room directly to outside without having to ener the corridor? Do you have a dead end situation in the corridor? If so how long is it? What means of detection and warning is available?

If you are looking at the building from a property protection point of view which is what most insurers will do then there probably is a problem. Again there are other things to consider e.g. is there a sprinkler system installed?

You may also want to look at it from a business perspective. If the fire were to spread via the breaches in the walls what are the implications?

Finally do not forget to look at it from a firefighters point of view. Is there a likelihood that a fire may spread unseen over the heads of firefighters in such a way that a fire they are tackling will break out behind them cutting off their escape route?

Educational establishments are notorious for having voids and common ceiling over more than one space.